Monthly outlook for South Lineville, MO: average high 90.7°, average low 67°. That is 4° above the climate normal for August. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 21 August (105.4°), the coolest 17 August (61.1°).
90.7°/67°
Average high / low
+4°
Above normal
6 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
90.4°
83.6°
+3.8°
19 August – 28 August
91.2°
83.6°
+4.2°
29 August – 7 September
at normal
81.2°
—
August records over 66 years
101.8°17 August 1983All-time high
46.6°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Princeton (13 mi).
Mon, 1096° / 73°0.07
96 °
South Lineville, Monday, 10 August
Light rain. High 96°, low 73°.
Pressure29.85 inHg
Wind9.9 mph SW
Humidity39%
Visibility6.2 mi
Dew point64°
Tue, 11102° / 71°0.41
102 °
South Lineville, Tuesday, 11 August
Heavy rain. High 102°, low 71°.
Pressure29.77 inHg
Wind15.9 mph SW
Humidity39%
Visibility6.2 mi
Dew point65°
Wed, 1293° / 69°0
93 °
South Lineville, Wednesday, 12 August
Light rain. High 93°, low 69°.
Pressure29.83 inHg
Wind8.2 mph E
Humidity52%
Visibility6.2 mi
Dew point68°
Thu, 1386° / 69°0.28
86 °
South Lineville, Thursday, 13 August
Light rain. High 86°, low 69°.
Pressure29.80 inHg
Wind20.7 mph NE
Humidity61%
Visibility—
Dew point69°
Fri, 1475° / 65°0.09
75 °
South Lineville, Friday, 14 August
Light rain. High 75°, low 65°.
Pressure30.03 inHg
Wind15.3 mph E
Humidity92%
Visibility—
Dew point67°
Sat, 1598° / 68°0.02
98 °
South Lineville, Saturday, 15 August
Light rain. High 98°, low 68°.
Pressure30.00 inHg
Wind14.7 mph E
Humidity52%
Visibility—
Dew point67°
Sun, 1683° / 65°0.05
83 °
South Lineville, Sunday, 16 August
Light rain. High 83°, low 65°.
Pressure30.12 inHg
Wind12.8 mph N
Humidity59%
Visibility—
Dew point64°
Mon, 1781° / 61°0
81 °
South Lineville, Monday, 17 August
Overcast. High 81°, low 61°.
Pressure30.09 inHg
Wind8 mph SE
Humidity46%
Visibility—
Dew point56°
Tue, 1891° / 64°0.05
91 °
South Lineville, Tuesday, 18 August
Light rain. High 91°, low 64°.
Pressure29.77 inHg
Wind12.9 mph S
Humidity46%
Visibility—
Dew point63°
Wed, 1985° / 69°0
85 °
South Lineville, Wednesday, 19 August
Clear. High 85°, low 69°.
Pressure29.94 inHg
Wind14.1 mph N
Humidity40%
Visibility—
Dew point55°
Thu, 2086° / 62°0
86 °
South Lineville, Thursday, 20 August
Partly cloudy. High 86°, low 62°.
Pressure29.94 inHg
Wind8.8 mph E
Humidity37%
Visibility—
Dew point53°
Fri, 21105° / 65°0
105 °
South Lineville, Friday, 21 August
Clear. High 105°, low 65°.
Pressure29.65 inHg
Wind18.5 mph NW
Humidity29%
Visibility—
Dew point57°
Sat, 2289° / 69°0
89 °
South Lineville, Saturday, 22 August
Clear. High 89°, low 69°.
Pressure29.91 inHg
Wind15.2 mph N
Humidity31%
Visibility—
Dew point51°
Sun, 2387° / 61°0
87 °
South Lineville, Sunday, 23 August
Clear. High 87°, low 61°.
Pressure30.12 inHg
Wind8.6 mph E
Humidity30%
Visibility—
Dew point48°
Mon, 2494° / 67°0
94 °
South Lineville, Monday, 24 August
Partly cloudy. High 94°, low 67°.
Pressure30.12 inHg
Wind12.4 mph S
Humidity27%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 66°0.17
84 °
South Lineville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.17 in
Chance of precipitation32%
Record high100° (2003)
Record low52° (2015)
Wed, 2684° / 67°0.17
84 °
South Lineville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.17 in
Chance of precipitation30%
Record high100° (2003)
Record low52° (2015)
Thu, 2783° / 67°0.11
83 °
South Lineville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.11 in
Chance of precipitation32%
Record high96° (2013)
Record low54° (1967)
Fri, 2883° / 65°0.15
83 °
South Lineville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.15 in
Chance of precipitation28%
Record high98° (1984)
Record low47° (1986)
Sat, 2983° / 66°0.07
83 °
South Lineville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.07 in
Chance of precipitation25%
Record high100° (1984)
Record low51° (1986)
Sun, 3082° / 65°0.11
82 °
South Lineville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation32%
Record high100° (2013)
Record low51° (2009)
Mon, 3182° / 65°0.13
82 °
South Lineville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.13 in
Chance of precipitation28%
Record high94° (2000)
Record low51° (1967)
Tue, 0182° / 65°0.12
82 °
South Lineville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (1984)
Record low49° (1967)
Wed, 0281° / 65°0.09
81 °
South Lineville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.09 in
Chance of precipitation33%
Record high92° (2000)
Record low52° (1974)
Thu, 0381° / 64°0.09
81 °
South Lineville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high93° (1999)
Record low45° (1974)
Fri, 0480° / 64°0.09
80 °
South Lineville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.09 in
Chance of precipitation18%
Record high93° (1983)
Record low44° (1974)
Sat, 0581° / 63°0.07
81 °
South Lineville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.07 in
Chance of precipitation20%
Record high92° (1990)
Record low47° (1962)
Sun, 0680° / 63°0.11
80 °
South Lineville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation22%
Record high94° (1990)
Record low47° (1988)
Mon, 0780° / 63°0.14
80 °
South Lineville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.14 in
Chance of precipitation32%
Record high96° (2013)
Record low48° (2025)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for South Lineville, MO are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in South Lineville, MO since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.